#include <iostream>


FILE *f = fopen("mins.in", "r"), *g = fopen("mins.out", "w");
long nr = 1;
int n, m;

int cmmdc(int a, int b)
{
	int x;
	if (a < b) {x = a;a = b;b = x;}
    while (b)
       {x = b;
        b = a % b;
        a = x;
        }
    x = a;
	return x;
}


int main() 
{
	fscanf(f, "%d %d", &n, &m);
	fclose(f);

	if (n < m) 
	{
		int x = n;
		n = m;
		m = x;
	}
	
	for (int i = 1; i < m; ++i)
		for (int j = i + 1; j < n; ++j)
		{
			if (cmmdc(i, j) == 1) {
				if ((j < m) && (i < n))
				{
					nr += 2;
					//printf("1 %d %d %d\n", i, j, nr);
				}
				else 
				{
					nr++;
					//printf("2 %d %d %d\n", i, j, nr);
				}
			}
		}

	fprintf(g, "%ld", nr);
	fclose(g);
	return 0;
}